Boss

Script

“Grust has been liberated. All that remains is Olbern Keep, where General Lang remains barricaded. Lang used his influence to steal belongings, daughters, and lives from the people of Grust. Was there ever a man as cruel as he is? “I cannot forgive him. I shall take him down without fail!” Prince Marth raised his sword to the skies and ordered firmly: “Altean knights, charge!”
—Opening Narration, New Mystery

“Grunia has been liberated. All that remains is Olbern Castle, held guard by the commander of the occupation army, General Lang. Lang used his position to steal possessions from the Grunian citizens, to steal young girls, and to steal lives. Historically, has there been a man crueller than him? "He cannot be allowed to live. I will definitely defeat him!" Prince Marth raised his sword towrads the skies and shouted out an order. "Aritian knights, charge!!"”
—Opening Narration, Mystery of the Emblem

In The Nest of Vice three Starsphere Shards can be obtained. Cancer is obtained by defeating Lang. Libra is obtained by opening the upper right chest. Aquarius is held by Samuel (disguised as Navarre), so he keeps it when he is recruited, and he drops it if he is defeated.